Benjamin Smedberg - Bug 616400 - When a plugin returns a failure code from NPP_New, but creates JS objects in the process, anyone trying to script those objects after NPP_New fails will crash (Silverlight crash @NPObjWrapper_NewResolve). Call nsJSNPRuntime::OnPluginDestroy on a failed-init case just as we do in a normal cleanup case. r=josh a=blocker